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/* $OpenBSD: vswscanf.c,v 1.3 2015/08/31 02:53:57 guenther Exp $ */ |
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/*- |
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* Copyright (c) 1990, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* This code is derived from software contributed to Berkeley by |
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* Donn Seeley at UUNET Technologies, Inc. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 4. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <limits.h> |
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#include <stdarg.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <wchar.h> |
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#include "local.h" |
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static int eofread(void *, char *, int); |
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static int |
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eofread(void *cookie, char *buf, int len) |
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{ |
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return (0); |
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} |
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int |
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vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, |
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__va_list ap) |
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{ |
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mbstate_t mbs; |
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FILE f; |
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struct __sfileext fext; |
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char *mbstr; |
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size_t len, mlen; |
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int r; |
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const wchar_t *strp; |
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/* |
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* XXX Convert the wide character string to multibyte, which |
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* __vfwscanf() will convert back to wide characters. |
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*/ |
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len = wcslen(str) * MB_CUR_MAX; |
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if ((mbstr = malloc(len + 1)) == NULL) |
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return (EOF); |
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bzero(&mbs, sizeof(mbs)); |
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strp = str; |
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if ((mlen = wcsrtombs(mbstr, &strp, len, &mbs)) == (size_t)-1) { |
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free(mbstr); |
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return (EOF); |
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} |
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if (mlen == len) |
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mbstr[len] = '\0'; |
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_FILEEXT_SETUP(&f, &fext); |
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f._flags = __SRD; |
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f._bf._base = f._p = (unsigned char *)mbstr; |
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f._bf._size = f._r = mlen; |
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f._read = eofread; |
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f._lb._base = NULL; |
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r = __vfwscanf(&f, fmt, ap); |
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free(mbstr); |
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return (r); |
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} |
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DEF_STRONG(vswscanf); |